package me.huha.zhime.controller;

import java.io.IOException;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import me.huha.ibatis.sqlbuilder.SpecificationBuilder;
import me.huha.zhime.entity.OrderInfoEntity;
import me.huha.zhime.entity.OrderInfoEntity.PaymentStatusEnum;
import me.huha.zhime.entity.OrderInfoEntity_;
import me.huha.zhime.pay.config.AlipayConfig;
import me.huha.zhime.pay.config.PayConfig;
import me.huha.zhime.service.AlipayService;
import me.huha.zhime.service.OrderService;
import me.huha.zhime.utils.Util;
import net.sf.json.JSONObject;

import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.internal.util.AlipaySignature;
import com.alipay.api.request.AlipayTradePagePayRequest;

/**
 * @Title: AlipayController
 * @Author: Yepx
 * @mail: yepx2013@gmail.com
 * @CreateTime: 2017年10月25日 下午2:12:54
 * @Todo: 阿里支付的相应的回调
 */
@Controller
@RequestMapping("alipay")
public class AlipayController {

	private static Logger logger = Logger.getLogger(AlipayController.class);

	@Autowired
	private AlipayService alipayService;
	@Autowired
	private OrderService orderService;

	@RequestMapping(value = "/pay")
	public ModelAndView pay(HttpServletRequest request, HttpServletResponse response) throws UnsupportedEncodingException,
			AlipayApiException {
		
		// 商户订单号，商户网站订单系统中唯一订单号，必填
		String out_trade_no = request.getParameter("orderNum");		  		//订单号
		// 订单名称，必填
		String subject = request.getParameter("goodName");		  		    //商品名称
		// 付款金额，必填
		String total_amount = request.getParameter("orderAmount");	   	    //订单金额
		
		
		
		// 获得初始化的AlipayClient
		AlipayClient alipayClient = new DefaultAlipayClient(
				AlipayConfig.gatewayUrl, AlipayConfig.app_id,
				AlipayConfig.merchant_private_key, "json",
				AlipayConfig.charset, AlipayConfig.alipay_public_key,
				AlipayConfig.sign_type);

		// 设置请求参数
		AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
		alipayRequest.setReturnUrl(AlipayConfig.return_url);
		alipayRequest.setNotifyUrl(AlipayConfig.notify_url);

		// 商品描述，可空
		String body = "";

		alipayRequest.setBizContent("{\"out_trade_no\":\"" + out_trade_no
				+ "\"," + "\"total_amount\":\"" + total_amount + "\","
				+ "\"subject\":\"" + subject + "\"," + "\"body\":\"" + body
				+ "\"," + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");

		System.out.println(JSONObject.fromObject(alipayRequest));
		System.out.println(alipayRequest);
		System.out.println(alipayRequest.toString());
		// 若想给BizContent增加其他可选请求参数，以增加自定义超时时间参数timeout_express来举例说明
		// alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no
		// +"\","
		// + "\"total_amount\":\""+ total_amount +"\","
		// + "\"subject\":\""+ subject +"\","
		// + "\"body\":\""+ body +"\","
		// + "\"timeout_express\":\"10m\","
		// + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
		// 请求参数可查阅【电脑网站支付的API文档-alipay.trade.page.pay-请求参数】章节

		// 请求
		String result = alipayClient.pageExecute(alipayRequest).getBody();

		Map<String, Object> map = new HashMap<String, Object>();
		map.put("status", "1");
		map.put("sHtmlText", result);

		ModelAndView model = new ModelAndView("index", map);
		return model;
	}
	
	
	/**
	 * 支付宝同步推送
	 * @param request
	 * @param response
	 * @return
	 */
	@RequestMapping(value = "/returnPush")
	public String returnPush(HttpServletRequest request, HttpServletResponse response){
		
		//获取支付宝GET过来反馈信息
		Map<String,String> params = new HashMap<String,String>();
		Map<String,String[]> requestParams = request.getParameterMap();
		
		//获取支付宝GET过来反馈信息
		Map<String,String> payStatusMap = new HashMap<String,String>();
		
		try{
			
			for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext();) {
				String name = (String) iter.next();
				String[] values = (String[]) requestParams.get(name);
				String valueStr = "";
				for (int i = 0; i < values.length; i++) {
					valueStr = (i == values.length - 1) ? valueStr + values[i]
							: valueStr + values[i] + ",";
				}
				//乱码解决，这段代码在出现乱码时使用
				valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
				params.put(name, valueStr);
			}
			
			boolean signVerified = AlipaySignature.rsaCheckV1(params, AlipayConfig.alipay_public_key, AlipayConfig.charset, AlipayConfig.sign_type); //调用SDK验证签名
			
			PrintWriter out = response.getWriter();
			//——请在这里编写您的程序（以下代码仅作参考）——
			if(signVerified) {
				//商户订单号
				String out_trade_no = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"),"UTF-8");
			
				//支付宝交易号
				String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"),"UTF-8");
			
				//付款金额
				String total_amount = new String(request.getParameter("total_amount").getBytes("ISO-8859-1"),"UTF-8");
				
				out.println("trade_no:"+trade_no+"<br/>out_trade_no:"+out_trade_no+"<br/>total_amount:"+total_amount);
				
				// 支付正常
				payStatusMap.put("payStatus", "1");
				
				alipayService.doReturnCallback(params);
			}else {
				out.println("验签失败");

				// 支付正常
				payStatusMap.put("payStatus", "2");
			}
			
		}catch(Exception e){
			logger.error(e);
			
			// 支付正常
			payStatusMap.put("payStatus", "2");
		}
		;
		try {
			PrintWriter out = response.getWriter();
			out.println("success");
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

		return "return_push";
	}
	
	/**
	 * 支付宝异步推送
	 * @param request
	 * @param response
	 * @return
	 */
	@RequestMapping(value = "/tradePush")
	public String tradePush(HttpServletRequest request,
			HttpServletResponse response) {

		// 获取支付宝POST过来反馈信息
		Map<String, String> params = new HashMap<String, String>();
		Map<String, String[]> requestParams = request.getParameterMap();

		try {
			for (Iterator<String> iter = requestParams.keySet().iterator(); iter
					.hasNext();) {
				String name = (String) iter.next();
				String[] values = (String[]) requestParams.get(name);
				String valueStr = "";
				for (int i = 0; i < values.length; i++) {
					valueStr = (i == values.length - 1) ? valueStr + values[i]
							: valueStr + values[i] + ",";
				}
				// 乱码解决，这段代码在出现乱码时使用
				// valueStr = new String(valueStr.getBytes("ISO-8859-1"),
				// "utf-8");
				params.put(name, valueStr);
			}

			System.out.println(params);

			boolean signVerified = AlipaySignature.rsaCheckV1(params,
					AlipayConfig.alipay_public_key, AlipayConfig.charset,
					AlipayConfig.sign_type); // 调用SDK验证签名
			// ——请在这里编写您的程序（以下代码仅作参考）——

			PrintWriter out = response.getWriter();
			/*
			 * 实际验证过程建议商户务必添加以下校验： 1、需要验证该通知数据中的out_trade_no是否为商户系统中创建的订单号，
			 * 2、判断total_amount是否确实为该订单的实际金额（即商户订单创建时的金额），
			 * 3、校验通知中的seller_id（或者seller_email)
			 * 是否为out_trade_no这笔单据的对应的操作方（有的时候，一个商户可能有多个seller_id/seller_email）
			 * 4、验证app_id是否为该商户本身。
			 */
			if (signVerified) {// 验证成功
				// 商户订单号
				String out_trade_no = request.getParameter("out_trade_no");

				// 支付宝交易号
				String trade_no = request.getParameter("trade_no");

				// 交易状态
				String trade_status = request.getParameter("trade_status");

				/*
				 * if(trade_status.equals("TRADE_FINISHED")){
				 * //判断该笔订单是否在商户网站中已经做过处理
				 * //如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序
				 * //如果有做过处理，不执行商户的业务程序
				 * 
				 * //注意： //退款日期超过可退款期限后（如三个月可退款），支付宝系统发送该交易状态通知 }else if
				 * (trade_status.equals("TRADE_SUCCESS")){
				 * //判断该笔订单是否在商户网站中已经做过处理
				 * //如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序
				 * //如果有做过处理，不执行商户的业务程序
				 * 
				 * //注意： //付款完成后，支付宝系统发送该交易状态通知 }
				 */
				// 查询订单
				OrderInfoEntity orderInfo = OrderInfoEntity.create(OrderInfoEntity.class)
														   .findUnique(SpecificationBuilder.builder()
														   .where(OrderInfoEntity_.orderNum.eq(out_trade_no)).build(), null);

				if (orderInfo != null) {

					if (trade_status.equals("TRADE_SUCCESS")) {

						if (PaymentStatusEnum.getPaymentStatusEnumByStatus(orderInfo.getPaymentStatus()) == PaymentStatusEnum.unpaid) {
							// 还没有付款的
							String currentDateTime = Util.date2str(8, null);

							Map<String, String> payStatusMap = new HashMap<String, String>();
							payStatusMap.put("hasPay", "1");
							payStatusMap.put("payTime", currentDateTime);
							payStatusMap.put("payType", "1");
							// 判断支付金额和实际支付金额是否相等
							String totalFeeString = params
									.get("receipt_amount");
							// String money = (int)
							// (trafficRecharge.getUserPrepaidAmount() *
							// 100) + "";
							// 构造方法的字符格式这里如果小数不足2位,会以0补足.
							DecimalFormat decimalFormat = new DecimalFormat(
									"#0.00");
							String money1 = decimalFormat.format(Double
									.parseDouble(totalFeeString));
							BigDecimal b1 = new BigDecimal(money1);
							BigDecimal b2 = orderInfo.getOrderAmount();

							if (b1.equals(b2)) {
								// 支付正常
								payStatusMap.put("payStatus", "1");
							} else {
								// 支付异常
								payStatusMap.put("payStatus", "2");
							}
							payStatusMap.put("hasPayTotalAmt", totalFeeString);
							// 插入alipay返回的数据
							alipayService.doTradeCallback(params, payStatusMap,orderInfo);
						}
						out.println("success");
					}
				}
			} else {// 验证失败
				out.println("fail");

				// 调试用，写文本函数记录程序运行情况是否正常
				// String sWord = AlipaySignature.getSignCheckContentV1(params);
				// AlipayConfig.logResult(sWord);
			}

		} catch (Exception e) {
			logger.error("", e);
		}

		return null;
	}
}
